Liquid fuel burner with vaporizing assembly



May 17, 1949. J. L. BREESE LIQUID FUEL BURER WITH VAPORIZING ASSEMBLYFiled Jupe 14, 1944 3 Sheets-Sheet 1 Nh Nm Lili.;

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May 17, 1949. J, L, BREESE 2,470,682

LIQUID FUEL BURNER WITH VAPORIZ'ING ASSEMBLY Filed June 14, 1944 3Sheets-Sheet 3 i 30 o 77 sa Patented May 17, 1949 LIQUID FUEL BURNERWITH VPORIZING ASSEMBLY l James L. Breese, Santa Fe, N. Mex., assigner,by mesne assignments, to Breese Burners, Inc., Santa Fe, N. Mex., acorporation of Delaware Application June 14, 1944, Serial No. 540,249

1 Claim.

The invention relates to an improvement in liquid fuel burners and hasfor one purpose to provide improved liquid fuel vaporizing means.

Another purpose is to provide improved means for vaporizing liquid fuelin connection with pot type burners.

Another purpose is to provide an improved va.- porizing cup andsupporting means therefor, for use in horizontal pot type burners.

Another purpose is to provide improved means elective to clean the fueladmission passage extending to the vaporizing cup or area of a liquidfuel burner.

Other purposes will appear from time to time throughout thespecification.

The invention is illustrated more or less dia.- grammatically in theaccompanying drawings, wherein:

Figure 1 is a plan view;

Figure 2 is a section on the line 2-2 of Fig. 1;

Figure 3 is a section on the line 3-3 of Fig. 2; and

Figures 4 and 5 are details.

Like parts are indicated by like symbols throughout the specificationand drawings.

Referring to the drawings I generally indicates a supporting ring havinga peripherial flange 2 from which extends a bracket 3 provided with asupporting member 4. On the bracket may be positioned any liquid fuelcontrol means 5 such as a float chamber assembly. The details ofthemselves do not form part of the present invention. i is any suitableshield mounted on the bracket 3 and extending between the belowdescribed burner and the float chamber assembly, the shield i beingeffective to protect the float chamber from direct heat radiation.

Referring to the burner assembly proper 1 is a ring located at theopposite end of the burner and having a circumferential outer ilange 8and an inner flange I denning between them a space or circumferentialdepression I5. II is any suitable packing means in said depression III.I2 is an outer generally cylindrical housing formed of sheet metal orthe like. I3 is the burner pot proper herein shown as including acircumferentially extending wall and unitary closed end I4. I5 is abaille having spacing edge portions I6. It may be welded or otherwisesecured to the end I4 as at I1. The ring I has a central aperture Il andmay have secured thereto a. ring I9 with a somewhat smaller centralaperture 2lil aligned generally with the axis of the pot and with thebaille I5. 2l is a name ring centrally aperturedv asat 22andabuttingatits edgesonaledge or,

' outer housing I2 is also provided with an inwardly extending flange23. The structure thus formed may be locked together by any suitabletension members or bolts 3|! the heads 3| of which may be recessed intosecuring blocks or plates 32 which abut against the outer face of thering 2|. 33 are any suitable locking nuts. It will be noted that the potI3 is provided with a plurality of air inlet apertures 3l located atvarious distances from the end of the pot. They may conveniently bearranged in rows, the apertures of adjacent rows being staggered. I mayprovide any suitable means for admitting secondary air. I illustrate forexample a row of secondary air inlets 35 extending about the pot andtilted toward the open end of the pot. In the form of the device hereinshown the secondary air inlets 35 are at the general plane of the ring24 and project jets of air into the space between the rings 2l and 24.36 are supplemental air inlets which direct air into a space definedbetween the pot I3 and the directing ange 31. Thus air is directedsubstantially parallel with the inner face of the pot I3 toward thebases of the air jets projected by the secondary air inlets 35. In theoperation of the burner it will be understood that a liquid ffuel isdelivered to the space within the pot I3 for vaporization by combustiontaking place in the pot or at the open end of the pot. 40 indicates avaporizing cup having a top open as at 4I and at each side of the cup isa laterally extending boss 42 provided with a bore 43. The cup may alsohave a circumferentially extending unitary flange 44. The ends of thebosses 42 are shown as engaging attened portions 45 of the pot wall. Aliquid fuel inlet tube 45, externally screw threaded as at 41 fits theinternal screw threaded end 48 of one of the bosses 42. At its outer endit receives a T connection 49. To one branch of the T is secured thetting '50 which has an externally screw threaded enlargement 5Ireceiving a gland 52 which is held under pressure by the apertured plug53 held in position by the nut 54. Fuel'is admitted through the Tconnection 55 from the liquid fuel line 56 which extends to the iloatchamber 51'of the liquid fuel control means 5.

The details of the float chamber do not of themselves form part of thepresent invention. It is understood that any suitable means may beemployed in the float chamber for maintaining a predetermined level offuel in the cup 4D. 6l is any suitable valve controlling means forvarying the rate of flow of liquid fuel from the iloat chamber 51 to thefitting 46 and thus to the interior of the cup 40. i 1

A clean out element is preferably permanently positioned in the liquidfuel inlet system thus provided. It is shown as including a stem 60having movement limiting enlargements 6I, 62. It extends outwardlythrough the gland 52, which substantially prevents leakage. Theenlargement 4I limits the inward movementl of the stem 60 toward the cupand the enlargement 62 limits its outward movement. The outward positionof its end portion is indicated in dotted line in Fig. 2. It may belaterally odset as at 63 and provided with a crank handle 64,4 to permitits ready man- -ual rotation. It is flattened and somewhat en- -largedat its inner end as at 65 and terminates in converging cutting edges 66,66a.

1 The opposite boss 42,.inwardly screw threaded as at 48 receives asecuring enclosure plug 10 exteriorly screw threaded as at 1I and isprovided with any suitable external head 12. It may extend through anysuitable screw threaded nut 13 engaging the exterior of the outer hous-.ing I2. A similar nut 13a on the exterior of the .member 46 engages theopposite side of the outer housing I2. Since both bosses or enlargements42 are identical it will be understood that :the cup can be employedwhether the float chamaber assembly is on the left hand of the burner asshown in Fig. 2 or on the right hand of the burner. Access to the cupfor lighting is provided by a centrally apertured element shown forexample in Fig. 3, which seats in an aperture in that part of the wallI3 which overlies the cup A4I). It is normally closed by a plug 16 thatseats by gravity on the upper face of the ring 15 and .includes aninwardly extending portion 11. The .member 16 may be inserted through anaperture 1B in the outer housing I2. It may be removed through suchaperture but its loss or displacement is prevented by any suitable chainor sencuring member 19 whereby it is flexibly secured to the exterior ofthe housing I2.

Any suitable booster fan mechanism, not herein shown, may be seated inthe aperture 20, whereby air under pressure may be delivered into thespace between the outer housing I2 and the pot I3. Any suitable baillemeans 80 may be provided in the space between the side wall of the .potI3 and the opposed portion of the outer housing I2. This baille preventsspiralling of the air in the space between the pot wall and housing.

It will be realized that, whereas I have de- ,scribed and shown apractical and operative embodiment of my invention and the method forcarrying it out, nevertheless many changes may .be made in the size,shape, number and dispo- `-sition of parts and in the details and stepsof such method without departing from the spirit of my invention. Itherefore wish my description and drawings to be taken as in a broadsense illustrative or diagrammatic, rather than as limiting me to myprecise showing.

. The use and operation of my invention are as follows:

` In starting the device liquid fuel is supplied to the interior of thecup from the float valve I-assembly-5, or from any other suitable sourceof liouidfuel. Thel fuel may be initially ignited.-

4 through the ring 15 and the aperture 1l. When ignition has taken placethe plug 14, 11 is put back in place, and is eifective to prevent anysubstantial air leakage. Assume that ignition has' begun and that theliquid fuel in the pot is under. going vaporization. The vaporized fuelrises from the pot and mixes with the primary air owing through theprimary aix'. inlets 34. The result is the formation of a mixture ofvaporized fuel and air which, when the device ls burning at a high rateof combustion, is mixed with secondary air delivered through theapertures 35 and is fully burned at or beyond the open end of the pot.Air pressure may be delivered through the aperture 20 for example byemployment of any suitable booster fan unit. The result is a flame whichflows through the aperture 22 of the flame ring 2i and may extend for asubstantial distance outside of the pot. Where sufficient air pressureis employed the burner lends itself to uses where a horizontallyprojected frame of substantial length is desirable. It may be employedfor example in small heating plants. cook stoves. hot water heaters andthe like.

The ring 24 serves as a recirculatlng ring as the secondary air isdirected into the space between the rings 24 and 2|. The vaporized fuelis thus completely mixed with the inflowing secondary air and some ofthe contents of the pot are drawn outwardly about the outer edge 21 ofthe ring 24. The baille I5 prevents undue cooling of the pot end I4 bythe inflowing air. The baffles prevent splralling of the air in thespace between the pot I3 and the outer housing I2. The air deliveredthrough the apertures 36 and directed by the flange 31 tends to hold thesecondary air jets to the pot wall, and reduces or eliminates combustionnoise.

The fuel within the cup 40is subjected to the direct heat of combustiontaking place within the pot, since the top of the cup is open. 'I'hefuel is also subjected to conducted heat, to heat conducted by the cupitself and by the circumferential flange 44.

A problem in connection with burners of this type is to prevent theformation of carbon within the fuel inlet passage. Some carbon will formand it is therefore desirable to provide means for cleaning out the fuelinlet passage. The rod 60 with its terminal portion 65 and its cuttingedges 66, 66a constitute an eflicient and easily employed means forcleaning out the fuel inlet passage, or that part of the passage whichis subjected to sufficient heat to cause the deposit of carbon or ofother contents of the fuel. The clean out member may formally be left inthe dotted line position of Fig. 2. When in that position the blade 65is withdrawn into the ltube or duct 46. Since the blade 65 is flattened,as shown in Fig. 5, it does not interrupt the free flow of fuel. Itsoutward withdrawal is limited by the expanded portions 62 which may forexample abut against the inner end of the fitting 50. The user from timeto time, or when he is satisfied that carbon or solids have formed inthe boss 42, can rotate the blade 65 by rotating the handle 64. At thesame time he can advance the rod 60 toward the cup 40. The edges 66 and66a are effective to cut through any accumulated solids. The solids.will be carried into the interior of the cup by the flowing fuel, andthe rod 60 can again be withdrawn to dotted line position. In use it isadvantageous to make a routine occasionally employing the clean outmembers thus provided.

The unit is conveniently compact and may be readily assembled ordisassembled.

I claim:

In a liquid fue] burner, a pot having an open end, a circumferentialside wall and an end wall, said side wall having a plurality of airinlet apertures located at various distances from the ends of the pot, avaporizing cup in said pot having lateral extensions engaging oppositeparts of said circumferential side wall, each said extension having apassage extending therethrough into communication with the interior ofthe cup, and means for securing the cup in relation to the pot includinga liquid fuel inlet duct extending through the pot wall and entering oneof said lateral extensions and a securing element extending through thepot wall and entering the other of said lateral extensions.

JAMES L. BREESE.

REFERENCES CITED The following references are of record in the ille ofthis patent:

Number UNITED STATES PATENTS Name Date Grimm Apr. 11, 1899 Mack Mar. 12,1901 Miner Nov. 21, 1905 Wednbine et al. Jan. 23, 1923 Breese, Jr. Sept.6, 1927 Chadwick Jan. 8, 1935 Daniels June 15, 1937 Bock Nov. 23, 1937Stoner Aug. 16, 1938 Knapp et al Nov. 22, 1938 Rose et al. Oct. 15, 1940Sabins May 6, 1941 Horne Dec. 2, 1941 Skolas Nov. 3, 1942 Welsh Mar. 21,1944 Breese et al 1- May 16, 1944

